140904089 has 12 divisors (see below), whose sum is σ = 144649116. Its totient is φ = 137244672.

The previous prime is 140904061. The next prime is 140904119. The reversal of 140904089 is 980409041.

It can be written as a sum of positive squares in 6 ways, for example, as 78400 + 140825689 = 280^2 + 11867^2 .

It is a de Polignac number, because none of the positive numbers 2^k-140904089 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140904059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729977 + ... + 730169.

It is an arithmetic number, because the mean of its divisors is an integer number (12054093).

Almost surely, 2^140904089 is an apocalyptic number.

It is an amenable number.

140904089 is a deficient number, since it is larger than the sum of its proper divisors (3745027).

140904089 is an equidigital number, since it uses as much as digits as its factorization.

140904089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476 (or 403 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 140904089 is about 11870.3028183783. The cubic root of 140904089 is about 520.3647453284.

The spelling of 140904089 in words is "one hundred forty million, nine hundred four thousand, eighty-nine".